Zip Area Code

Speedwell, Tennessee

Speedwell, Tennessee, in Claiborne County, has ZIP code 37870 and area code 423, with 729 as an overlay.

ZIP code
37870
Area codes
423, 729
Coordinates
36.4797, -83.8135

ZIP codes in Speedwell

ZIP codePost officeCountyArea codes
37870SpeedwellClaiborne County423, 729

Area codes for Speedwell

  • Area code 423

    In service since September 11, 1995. Shares its area with 729. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 729

    In service since September 5, 2025. Shares its area with 423. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Towns near Speedwell